CVE-2025-67445

TOTOLINK X5000R V9.1.0cu.2415_B20250515 contains a denial-of-service vulnerability in /cgi-bin/cstecgi.cgi. The CGI reads the CONTENT_LENGTH environment variable and allocates memory using malloc (CONTENT_LENGTH + 1) without sufficient bounds checking. When lighttpd s request size limit is not enforced, a crafted large POST request can cause memory exhaustion or a segmentation fault, leading to a crash of the management CGI and loss of availability of the web interface.
References
Link Resource
https://github.com/DaRkSpOoOk/CVE-2025-67445 Exploit Third Party Advisory
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:totolink:x5000r_firmware:9.1.0cu.2415_b20250515:*:*:*:*:*:*:*
cpe:2.3:h:totolink:x5000r:-:*:*:*:*:*:*:*

History

05 Jul 2026, 02:17

Type Values Removed Values Added
References
  • {'url': 'http://totolink.com', 'tags': ['Product'], 'source': 'cve@mitre.org'}

17 Jun 2026, 09:57

Type Values Removed Values Added
Summary
  • (es) TOTOLINK X5000R V9.1.0cu.2415_B20250515 contiene una vulnerabilidad de denegación de servicio en /cgi-bin/cstecgi.cgi. El CGI lee la variable de entorno CONTENT_LENGTH y asigna memoria usando malloc (CONTENT_LENGTH + 1) sin una comprobación de límites suficiente. Cuando no se aplica el límite de tamaño de solicitud de lighttpd, una solicitud POST grande y elaborada puede causar agotamiento de memoria o un fallo de segmentación, lo que lleva a un fallo del CGI de gestión y la pérdida de disponibilidad de la interfaz web.

25 Feb 2026, 17:54

Type Values Removed Values Added
CPE cpe:2.3:h:totolink:x5000r:-:*:*:*:*:*:*:*
cpe:2.3:o:totolink:x5000r_firmware:9.1.0cu.2415_b20250515:*:*:*:*:*:*:*
First Time Totolink x5000r
Totolink x5000r Firmware
Totolink
References () http://totolink.com - () http://totolink.com - Product
References () https://github.com/DaRkSpOoOk/CVE-2025-67445 - () https://github.com/DaRkSpOoOk/CVE-2025-67445 - Exploit, Third Party Advisory

25 Feb 2026, 17:25

Type Values Removed Values Added
CWE CWE-400
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 7.5

24 Feb 2026, 15:21

Type Values Removed Values Added
New CVE

Information

Published : 2026-02-24 15:21

Updated : 2026-07-05 02:17


NVD link : CVE-2025-67445

Mitre link : CVE-2025-67445

CVE.ORG link : CVE-2025-67445


JSON object : View

Products Affected

totolink

  • x5000r_firmware
  • x5000r
CWE
CWE-400

Uncontrolled Resource Consumption